Title:
CATHETER WITH COILED MULTI-LUMEN HEAT TRANSFER EXTENSION
Document Type and Number:
WIPO Patent Application WO2001008580
Kind Code:
A9
Abstract:
A catheter (100) includes a sealed multi-lumen heat transfer extension (102) designed to internally circulate a coolant, and thereby cool tissue or fluid surrounding the catheter. The heat transfer extension includes a tube (104) having a distally positioned region that coils about the tube's longitudinal axis. The tube houses multiple longitudinal lumens which include supply (210) or return (208) lumens. A distal fluid exchange reservoir (250) resides at the tube's tip. The heat transfer extension may include a shape memory structure (212) which causes it to vary its shape with temperature. The catheter also includes an interface having supply, return lines to provide coolant to the heat transfer section, and remove coolant returning therefrom. Optionally, one or more lumens may be configured as flow through lumens to exchange fluids with the patient.
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Inventors:
PECOR ROBERT (US)
Application Number:
PCT/US2000/020969
Publication Date:
July 25, 2002
Filing Date:
August 01, 2000
Export Citation:
Assignee:
ALSIUS CORP (US)
PECOR ROBERT (US)
PECOR ROBERT (US)
International Classes:
A61M25/00; F04D3/02; F04D29/18; (IPC1-7): A61B18/18
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